Abstract
A single specimen fracture-test method for determining the fracture energy of highly deformable materials is presented. This test method is based on the locus method, which determines the critical J- integral value ( J c ) by partitioning the essential energy for crack propagation from the total absorbed energy. The locus method uses the locus of crack initiation points on the load-displacement record of specimens which differ only in initial crack size. With a proper specimen shape and loading condition, the locus line is predictable. When the locus line is predictable J c can be evaluated from a single specimen. Experimental results show that the fracture energy determined by the single specimen method agrees well with those by the tearing energy approach and multiple specimen locus method.
Published Version
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